Aggregated Groundfish Trawl Catch and Effort Grid 1996-2004

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Fisheries and Oceans Canada, Pacific Biological Station

Publication_Date: February 2006

Title: Aggregated Groundfish Trawl Catch and Effort Grid 1996-2004

Edition: 1

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Marine Atlas of Pacific Canada

Publication_Information:

Publisher:

The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project

Online_Linkage:

\\POTTER\L$\Data Library\Restricted\CommercialFish\BCMCA_hu_CommercialFish_GroundTrawl_data.shp

Larger_Work_Citation:

Citation_Information:

Originator:

The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project

Publication_Date: May 2011

Title: Marine Atlas of Pacific Canada

Online_Linkage: www.bcmca.ca/data

Description:

Abstract:

The Groundfish Trawl catch and effort grid dataset has been assembled directly from the Groundfish Stock Assessment harvest log database (PacHarvTrawl) located at the Pacific Biological Station(PBS). The dataset has been modified to meet the sensitive nature of the data as per the Access to Information Act20(1)(b,c); which specifies that Fisheries and Oceans Canada will not disclose to a third party confidential information that may prejudice the competitive position of the fisher, in which fishing location has been identified as one of the entities to be protected. There was a 4km x 4km grid used in the desensitization process as well information was limited to total Effort (hr) and total Catch (kg). The dataset is comprised of an aggregate of all species and specifically targets the 1996-2004 fishing seasons.

Purpose:

The purpose of the data is to display complete, up-to-date information on commercial Groundfish Trawl fishing activities along the coast of British Columbia for the BCMCA Atlas and Marxan analyses. This dataset was originally developed in fulfillment of a request by the Oceans Action Plan (OAP) committee with the intent to contribute to management plans within the Pacific North Coast Integrated Management Area (PNCIMA). It was subsequently provided to the British Columbia Marine Conservation Analysis (BCMCA).
The British Columbia Marine Conservation Analysis (BCMCA) is a collaborative project assembling and analyzing spatial information about Canada's Pacific Ocean. The overall goal of the BCMCA is to identify marine areas of high conservation value and marine areas important to human use. Results of the project are intended to inform and help advance marine planning initiatives in BC by providing collaborative, peer-reviewed scientific analyses based on the best ecological and human use spatial data at scales relevant to a BC coast-wide analysis.

Supplemental_Information:

Due to the variable nature of the data not all of the information in the database can be shown spatially. The data availability for this data set is 97.71%

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1996

Ending_Date: 2004

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -134.074666

East_Bounding_Coordinate: -122.694756

North_Bounding_Coordinate: 54.815635

South_Bounding_Coordinate: 47.904991

Keywords:

Theme:

Theme_Keyword: Groundfish

Theme_Keyword: economy

Theme_Keyword: Trawl

Theme_Keyword: Dragger

Theme_Keyword: catch

Theme_Keyword: effort

Place:

Place_Keyword: BC

Place_Keyword: Pacific Ocean

Temporal:

Temporal_Keyword: 1996

Temporal_Keyword: 1997

Temporal_Keyword: 1998

Temporal_Keyword: 1999

Temporal_Keyword: 2000

Temporal_Keyword: 2001

Temporal_Keyword: 2002

Temporal_Keyword: 2003

Temporal_Keyword: 2004

Access_Constraints:

A Limited Use Agreement must be completed and returned to Fisheries and Oceans Canada

Use_Constraints: As outlined in the Limited Use Agreement

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Sean MacConnachie

Contact_Organization: Fisheries and Oceans Canada

Contact_Position: Oceans Project Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 4166 Departure Bay Road

City: Nanaimo

State_or_Province: BC

Postal_Code: V9T 6B7

Country: Canada

Contact_Voice_Telephone: 250-756-7265

Data_Set_Credit: Fisheries and Oceans Canada, Pacific Biological Station

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

4km x 4km grid cells that meet the requirements of the Access to Information Act two attributes were obtained a total Effort_hr and Catch_lbs per grid cell

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Value: Effort_hr

Attribute_Accuracy_Explanation: A total effort in tow hours

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Value: Catch_kg

Attribute_Accuracy_Explanation: A total catch in kg

Logical_Consistency_Report:

Data has been cleaned using a dangle length of .001m and fuzzy tolerance of .0001m A 4km x 4km grid was used with an grid origin of: Easting -27940m, Northing 94650m To meet the sensitivity requirements of the Access to Information Act a count of 3 or more vessels (CFV field used), that were fishing within the same grid cell and within the same fishing season (Year field used) was used

Completeness_Report:

See the Marine Atlas of British Columbia, p137, for reviewer comments and caveats of use

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

A 4km x 4km grid was used with an grid origin of: Easting -27940m, Northing 94650m

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

A 4km x 4km grid was used with an grid origin of: Easting -27940m, Northing 94650m

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: PBS Data Unit

Publication_Date: Unknown

Title: Groundfish Trawl Logs

Geospatial_Data_Presentation_Form: tabular digital data

Source_Scale_Denominator: Variable

Type_of_Source_Media: online Database

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1996

Ending_Date: 2004

Source_Currentness_Reference: publication date

Process_Step:

Process_Description:

- Queries PacHarvTrawl database for CFV, Catch, Effort, lat and long and year range fields - In ArcMap using Lon & Lat fields as XY coordinates created a shape files Using XTOOLS XY coordinates were assigned. - Exported dbf file to uniquecfv.mdb database provided by Norm Olson (PBS) to populate index fields which were required to spatially sort unique CFV. XY fields were used to assign a point value associated with a unique grid value. Fields were than summed by CFV to provide a summed value for each grid. - Within ArcMap imported the new dbf file into ArcMap and use XY coordinates to map the points. - Joined the 4km x 4km grid to the trawlpoint file. During the joining all fields are summed. A newly created Sum of Count field indicated number of unique vessels in the grid. - Select only those records that have a sum vessel count greater than 2. - Export selected records and create new shape file. -- Eliminated all irrelevant fields keeping only the GridCell, Effort and Catch_kg attribute items

Process_Date: February 2006

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Sean MacConnachie

Contact_Organization: Department of Fisheries and Oceans, Pacific Biological Station

Contact_Position: Project Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 4166 Departure Bay Road

City: Nanaimo

State_or_Province: BC

Postal_Code: V9T 6B7

Country: Canada

Contact_Voice_Telephone: 250-756-7265

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 2702

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Standard_Parallel: 50.000000

Standard_Parallel: 58.500000

Longitude_of_Central_Meridian: -126.000000

Latitude_of_Projection_Origin: 45.000000

False_Easting: 1000000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000000

Ordinate_Resolution: 0.000000

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: BCMCA_hu_CommercialFish_GroundTrawl_data

Entity_Type_Definition:

Groundfish Trawl 1996-2004 4km x 4km grid greater than 2 vessels

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: CATCH_KG

Attribute_Definition: A total catch in kg

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: OBJECTID

Attribute:

Attribute_Label: FID_1

Attribute:

Attribute_Label: EFFORT_HRS

Attribute_Definition: A total effort in tow hours

Attribute:

Attribute_Label: VESSELS

Attribute_Definition:

Number of vessels that contribute to the totals for effort and catch in the grid cell

Attribute:

Attribute_Label: SHAPE_AREA

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: SHAPE_LEN

Overview_Description:

Entity_and_Attribute_Overview:

The 4km x 4km gridcells present in this dataset have met the 3 vessel rule. The attribute information have been rolled-up per gridcell include the Total "Effort_hr" and Total "Catch_kg".

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dwight McCullough

Contact_Organization: Fisheries and Oceans Canada

Contact_Position: GIS Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: Suite 200 401 Burrard Street

City: Vancouver

State_or_Province: BC

Postal_Code: V6C 3S4

Country: Canada

Contact_Voice_Telephone: 604-666-2044

Contact_Electronic_Mail_Address: Dwight.McCullough@dfo-mpo.gc.ca

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 0.016

Available_Time_Period:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1996

Ending_Date: 2004

Metadata_Reference_Information:

Metadata_Date: 20111229

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dave Nicolson

Contact_Organization: British Columbia Marine Conservation Analysis

Contact_Position: Project Manager

Contact_Address:

Address_Type: mailing and physical address

Contact_Electronic_Mail_Address: info@bcmca.ca

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile